parent
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commit
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# -*- coding: utf-8 -*-# -*- coding: utf-8 -*-
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# 订阅者
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import paho.mqtt.client as mqtt
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broker = '121.40.129.71'
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# 连接成功回调
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def on_connect(client, userdata, flags, rc,properties):
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if rc.is_failure:
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print(f"连接失败: {rc}. loop_forever()将重新连接")
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else:
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print(f'连接成功: {rc}')
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client.subscribe('host_status/#')
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def on_subscribe(client, userdata, mid, reason_code_list, properties): # 订阅回调
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if reason_code_list[0].is_failure:
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print(f'订阅失败: {reason_code_list[0]}')
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else:
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print(f'订阅成功: {reason_code_list[0].value}')
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def on_unsubscribe(client, userdata, mid, reason_code_list, properties): # 取消订阅回调
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if len(reason_code_list) == 0 or not reason_code_list[0].is_failure:
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print("取消订阅成功(if SUBACK is received in MQTTv3 it success)")
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else:
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print(f"取消订阅失败: {reason_code_list[0]}")
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client.disconnect() # 断开连接
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# 消息接收回调
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def on_message(client, userdata, msg):
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print(msg.topic+" "+str(msg.payload))
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mqtt = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, client_id="book_1")
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mqtt.on_connect = on_connect
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mqtt.on_message = on_message
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mqtt.on_subscribe = on_subscribe
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mqtt.on_unsubscribe = on_unsubscribe
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mqtt.is_connected()
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mqtt.user_data_set(["user_data", "book_1"])
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mqtt.connect(broker, 48835, 60)
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mqtt.loop_forever()
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print(f"收到以下消息: {mqtt.user_data_get()}")
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# while True:
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# rc = mqtt.loop(timeout=1.0)
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# print(11)
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# if rc != 0:
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# mqtt.reconnect()
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@ -0,0 +1,32 @@
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# MQTT订阅客户端
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import paho.mqtt.client as mqtt
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broker = "121.40.129.71"
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# 连接成功回调
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def on_connect(client, userdata, flags, rc,properties):
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print('Connected with result code '+str(rc))
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client.subscribe('tts/#')
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# 消息接收回调
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def on_message(client, userdata, msg):
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print(msg.topic+" "+str(msg.payload))
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client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, clean_session=True)
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# username = "gd32"
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# password = "educoder"
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# client.username_pw_set(username, password)
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# 指定回调函数
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client.on_connect = on_connect
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client.on_message = on_message
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# 建立连接
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client.connect(broker, 48835, 60)
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# 发布消息
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# client.publish('emqtt',payload='Hello World',qos=0)
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client.loop_forever()
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@ -0,0 +1,93 @@
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更换为国内源可以提高软件包下载速度。常用的国内源有中科大、清华大学、阿里云等。下面是将 Debian Bookworm 的源替换为国内源的步骤：
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### 步骤：
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1. **备份当前源列表（可选）：**
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```bash
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sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup
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```
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2. **编辑 `sources.list` 文件：**
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使用你喜欢的文本编辑器（例如 `nano`、`vim` 或 `gedit`）编辑 `/etc/apt/sources.list` 文件：
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```bash
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sudo nano /etc/apt/sources.list
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```
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3. **更新源列表内容：**
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下面是使用清华大学的镜像源作为示例，可以将其内容粘贴到 `sources.list` 文件中：
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```plaintext
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deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bookworm main contrib non-free non-free-firmware
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deb https://mirrors.tuna.tsinghua.edu.cn/debian-security bookworm-security main contrib non-free non-free-firmware
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deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bookworm-updates main contrib non-free non-free-firmware
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#deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ bookworm main contrib non-free non-free-firmware
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#deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security bookworm-security main contrib non-free non-free-firmware
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#deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ bookworm-updates main contrib non-free non-free-firmware
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```
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其他可用的国内源示例：
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**中科大镜像源：**
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```plaintext
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deb http://mirrors.ustc.edu.cn/debian/ bookworm main contrib non-free non-free-firmware
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deb http://mirrors.ustc.edu.cn/debian-security/ bookworm-security main contrib non-free non-free-firmware
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deb http://mirrors.ustc.edu.cn/debian/ bookworm-updates main contrib non-free non-free-firmware
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#deb-src http://mirrors.ustc.edu.cn/debian/ bookworm main contrib non-free non-free-firmware
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#deb-src http://mirrors.ustc.edu.cn/debian-security/ bookworm-security main contrib non-free non-free-firmware
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#deb-src http://mirrors.ustc.edu.cn/debian/ bookworm-updates main contrib non-free non-free-firmware
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```
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**阿里云镜像源：**
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```plaintext
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deb http://mirrors.aliyun.com/debian/ bookworm main contrib non-free non-free-firmware
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deb http://mirrors.aliyun.com/debian-security/ bookworm-security main contrib non-free non-free-firmware
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deb http://mirrors.aliyun.com/debian/ bookworm-updates main contrib non-free non-free-firmware
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#deb-src http://mirrors.aliyun.com/debian/ bookworm main contrib non-free non-free-firmware
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#deb-src http://mirrors.aliyun.com/debian-security/ bookworm-security main contrib non-free non-free-firmware
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#deb-src http://mirrors.aliyun.com/debian/ bookworm-updates main contrib non-free non-free-firmware
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```
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4. **保存并退出编辑器：**
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- 如果使用 `nano`，按 `Ctrl+O` 保存文件，然后按 `Ctrl+X` 退出编辑器。
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5. **更新软件包列表：**
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运行以下命令来更新软件包列表：
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```bash
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sudo apt-get update
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```
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### 验证更新
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在运行 `sudo apt-get update` 后，你应该看到类似如下的输出，表示成功从新的软件源获取了软件包列表：
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```plaintext
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Hit:1 https://mirrors.tuna.tsinghua.edu.cn/debian bookworm InRelease
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Hit:2 https://mirrors.tuna.tsinghua.edu.cn/debian-security bookworm-security InRelease
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Hit:3 https://mirrors.tuna.tsinghua.edu.cn/debian bookworm-updates InRelease
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Reading package lists... Done
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```
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### 安装和升级软件包
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如果需要升级所有已安装的软件包，可以运行：
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```bash
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sudo apt-get upgrade
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```
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或者安装特定软件包：
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```bash
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sudo apt-get install <package-name>
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```
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通过这些步骤，你可以使用国内镜像源加快软件包的下载速度。
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Loading…
Reference in new issue